{"id":"vidhyamitra:city-day:perth:2113-10-18:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/perth/2113-10-18","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2113-10-18","date_display":"October 18, 2113 CE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2113,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2493107.770833,"kali_year":5215,"ahargana":1904642.2708,"sun":{"sidereal_longitude":178.1529,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":273.0017,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":94.8488,"elapsed_within_tithi_degrees":10.8488},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":273.0017,"elapsed_within_degrees":6.335},"yoga":{"number":7,"name":"Sukarma","sum_longitude":91.1546},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":2113,"month":10,"day":18,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2493107.770833,"ahargana":1904642.2708,"kali_year":5215,"ayanamsa_lahiri":25.4426,"grahas":{"sun":{"sidereal_longitude":179.16090699999995,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":14,"name":"Citrā","pada":2},"retrograde":false},"moon":{"sidereal_longitude":269.8377069999999,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false,"latitude":-2.2561},"mars":{"sidereal_longitude":158.38060700000005,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":12,"name":"Uttara Phalgunī","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":166.16370699999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"jupiter":{"sidereal_longitude":212.24030700000003,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":164.28870699999993,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":2},"retrograde":false},"saturn":{"sidereal_longitude":326.99120700000003,"rashi":{"number":11,"name":"Kumbha"},"nakshatra":{"number":25,"name":"Pūrva Bhādrapadā","pada":3},"retrograde":true},"rahu":{"sidereal_longitude":62.8867,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":5,"name":"Mṛgaśīrṣā","pada":3},"retrograde":false},"ketu":{"sidereal_longitude":242.8867,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":19,"name":"Mūla","pada":1},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2113,"month":10,"day":18,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2493107.770833,"kali_year":5215,"ahargana":1904642.2708,"sun":{"sidereal_longitude":178.1529,"rashi":6,"rashi_name":"Kanyā"},"moon":{"sidereal_longitude":273.0017,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":8,"name":"Aṣṭamī","paksha":"Śukla","full_name":"Śukla Aṣṭamī","elongation_degrees":94.8488,"elapsed_within_tithi_degrees":10.8488},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":2,"moon_longitude":273.0017,"elapsed_within_degrees":6.335},"yoga":{"number":7,"name":"Sukarma","sum_longitude":91.1546},"karana":{"half_tithi_index":15,"name":"Bava"},"vara":{"number":5,"name":"Budhavāra (Wednesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":-2.256,"elongation":94.849},"lunar":{"type":"lunar","occurs":false,"moon_latitude":-2.256,"opposition_distance":85.151}},"eclipse_window_40days":[]},"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"tier2":{"city":{"slug":"perth","name":"Perth, Australia","lat":-31.9505,"lon":115.8605,"tz_offset_hours":8,"country":"AU","tier":"diaspora"},"sunriseLocal":"05:33","sunsetLocal":"18:29","solarNoonLocal":"12:01","dayLengthHours":12.935054164219672,"dayLengthDisplay":"12 Hours 56 Mins 06 Secs","nightLengthDisplay":"11 Hours 03 Mins 54 Secs","moonriseLocal":"11:05","moonsetLocal":"01:03","rahuKala":{"name":"Rāhu Kāla","start":"12:01","end":"13:38","startHours":12.019372363279693,"endHours":13.636254133807153,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"07:10","end":"08:47","startHours":7.168727051697317,"endHours":8.785608822224777,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"10:24","end":"12:01","startHours":10.402490592752235,"endHours":12.019372363279693,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:34","end":"09:00","startHours":8.570024586154448,"endHours":9.001193058295105,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:05","end":"06:26","startHours":6.090805871345678,"endHours":6.435740649058203,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:35","end":"12:27","startHours":11.588203891139038,"endHours":12.450540835420348,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"03:50","end":"04:41","startHours":3.8271713926072355,"endHours":4.689508336888546,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"04:28","end":"05:33","startHours":4.473924100818219,"endHours":5.551845281169858,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:11","end":"15:02","startHours":14.175214723982972,"endHours":15.037551668264284,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"18:17","end":"18:41","startHours":18.28689944538953,"endHours":18.68689944538953,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"18:29","end":"19:02","startHours":18.48689944538953,"endHours":19.025860035565348,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"18:14","end":"19:59","startHours":18.23689944538953,"endHours":19.98689944538953,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:35","end":"00:27","startHours":23.588203891139038,"endHours":24.450540835420348,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Labha","start":"05:33","end":"07:10","startHours":5.551845281169858,"endHours":7.168727051697317,"quality":"auspicious"},{"name":"Amṛta","start":"07:10","end":"08:47","startHours":7.168727051697317,"endHours":8.785608822224777,"quality":"auspicious"},{"name":"Kāla","start":"08:47","end":"10:24","startHours":8.785608822224777,"endHours":10.402490592752235,"quality":"inauspicious"},{"name":"Śubha","start":"10:24","end":"12:01","startHours":10.402490592752235,"endHours":12.019372363279693,"quality":"auspicious"},{"name":"Roga","start":"12:01","end":"13:38","startHours":12.019372363279693,"endHours":13.636254133807153,"quality":"inauspicious"},{"name":"Udveg","start":"13:38","end":"15:15","startHours":13.636254133807153,"endHours":15.253135904334613,"quality":"inauspicious"},{"name":"Chala","start":"15:15","end":"16:52","startHours":15.253135904334613,"endHours":16.87001767486207,"quality":"neutral"},{"name":"Labha","start":"16:52","end":"18:29","startHours":16.87001767486207,"endHours":18.48689944538953,"quality":"auspicious"}],"nightChoghadiyas":[{"name":"Udveg","start":"18:29","end":"19:52","startHours":18.48689944538953,"endHours":19.87001767486207,"quality":"inauspicious"},{"name":"Chala","start":"19:52","end":"21:15","startHours":19.87001767486207,"endHours":21.253135904334613,"quality":"neutral"},{"name":"Labha","start":"21:15","end":"22:38","startHours":21.253135904334613,"endHours":22.636254133807153,"quality":"auspicious"},{"name":"Amṛta","start":"22:38","end":"00:01","startHours":22.636254133807153,"endHours":24.019372363279693,"quality":"auspicious"},{"name":"Kāla","start":"00:01","end":"01:24","startHours":24.019372363279693,"endHours":25.402490592752233,"quality":"inauspicious"},{"name":"Śubha","start":"01:24","end":"02:47","startHours":25.402490592752233,"endHours":26.785608822224773,"quality":"auspicious"},{"name":"Roga","start":"02:47","end":"04:10","startHours":26.785608822224773,"endHours":28.168727051697317,"quality":"inauspicious"},{"name":"Udveg","start":"04:10","end":"05:33","startHours":28.168727051697317,"endHours":29.551845281169857,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"05:33","end":"06:33","startHours":5.551845281169858,"endHours":6.551845281169858,"planetary_lord":"Mercury"},{"name":"Hora 2","start":"06:33","end":"07:33","startHours":6.551845281169858,"endHours":7.551845281169858,"planetary_lord":"Venus"},{"name":"Hora 3","start":"07:33","end":"08:33","startHours":7.551845281169858,"endHours":8.551845281169857,"planetary_lord":"Sun"},{"name":"Hora 4","start":"08:33","end":"09:33","startHours":8.551845281169857,"endHours":9.551845281169857,"planetary_lord":"Mars"},{"name":"Hora 5","start":"09:33","end":"10:33","startHours":9.551845281169857,"endHours":10.551845281169857,"planetary_lord":"Jupiter"},{"name":"Hora 6","start":"10:33","end":"11:33","startHours":10.551845281169857,"endHours":11.551845281169857,"planetary_lord":"Saturn"},{"name":"Hora 7","start":"11:33","end":"12:33","startHours":11.551845281169857,"endHours":12.551845281169857,"planetary_lord":"Moon"},{"name":"Hora 8","start":"12:33","end":"13:33","startHours":12.551845281169857,"endHours":13.551845281169857,"planetary_lord":"Mercury"},{"name":"Hora 9","start":"13:33","end":"14:33","startHours":13.551845281169857,"endHours":14.551845281169857,"planetary_lord":"Venus"},{"name":"Hora 10","start":"14:33","end":"15:33","startHours":14.551845281169857,"endHours":15.551845281169857,"planetary_lord":"Sun"},{"name":"Hora 11","start":"15:33","end":"16:33","startHours":15.551845281169857,"endHours":16.551845281169857,"planetary_lord":"Mars"},{"name":"Hora 12","start":"16:33","end":"17:33","startHours":16.551845281169857,"endHours":17.551845281169857,"planetary_lord":"Jupiter"},{"name":"Hora 13","start":"17:33","end":"18:33","startHours":17.551845281169857,"endHours":18.551845281169857,"planetary_lord":"Saturn"},{"name":"Hora 14","start":"18:33","end":"19:33","startHours":18.551845281169857,"endHours":19.551845281169857,"planetary_lord":"Moon"},{"name":"Hora 15","start":"19:33","end":"20:33","startHours":19.551845281169857,"endHours":20.551845281169857,"planetary_lord":"Mercury"},{"name":"Hora 16","start":"20:33","end":"21:33","startHours":20.551845281169857,"endHours":21.551845281169857,"planetary_lord":"Venus"},{"name":"Hora 17","start":"21:33","end":"22:33","startHours":21.551845281169857,"endHours":22.551845281169857,"planetary_lord":"Sun"},{"name":"Hora 18","start":"22:33","end":"23:33","startHours":22.551845281169857,"endHours":23.551845281169857,"planetary_lord":"Mars"},{"name":"Hora 19","start":"23:33","end":"00:33","startHours":23.551845281169857,"endHours":24.551845281169857,"planetary_lord":"Jupiter"},{"name":"Hora 20","start":"00:33","end":"01:33","startHours":24.551845281169857,"endHours":25.551845281169857,"planetary_lord":"Saturn"},{"name":"Hora 21","start":"01:33","end":"02:33","startHours":25.551845281169857,"endHours":26.551845281169857,"planetary_lord":"Moon"},{"name":"Hora 22","start":"02:33","end":"03:33","startHours":26.551845281169857,"endHours":27.551845281169857,"planetary_lord":"Mercury"},{"name":"Hora 23","start":"03:33","end":"04:33","startHours":27.551845281169857,"endHours":28.551845281169857,"planetary_lord":"Venus"},{"name":"Hora 24","start":"04:33","end":"05:33","startHours":28.551845281169857,"endHours":29.551845281169857,"planetary_lord":"Sun"}],"taraBala":{"favorable_nakshatras":["Rohiṇī","Mṛgaśirā","Ārdrā","Punarvasu","Puṣya","Hasta","Citrā","Svātī","Viśākhā","Anurādhā","Śravaṇa","Dhaniṣṭhā","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā"],"unfavorable_nakshatras":["Aśvinī","Bharaṇī","Kṛttikā","Aśleṣā","Maghā","Pūrva Phalgunī","Uttara Phalgunī","Jyeṣṭhā","Mūla","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Revatī"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Vṛṣabha","Mithuna","Kanyā","Tulā","Dhanu","Kumbha"],"unfavorable_rashis":["Meṣa","Karka","Siṃha","Vṛścika","Makara","Mīna"]},"dishaShool":"North (Uttara)","chandraVasa":"East","rahuVasa":"South-West","anandadiYoga":{"name":"Saumya","quality":"Auspicious"},"tropicalRitu":"Śarad (Autumn) (tropical)","vedicRitu":"Varṣā (Monsoon)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-9.53154061499076,"eotMinutes":15.395658203218455,"ayanamsa":25.4426}},"calendars":{"vikram_samvat":2170,"vikram_samvatsara":"Vyaya","saka_samvat":2035,"saka_samvatsara":"Śrīmukha","bengali_samvat":1520,"malayalam_era":1289,"nanakshahi_year":644,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Kanyā (Puraṭṭāsi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Aṣṭamī · Vikram 2170 Vyaya · Śaka 2035 Śrīmukha"},"festivals":[{"id":"durga-ashtami","name":"Mahā-Aṣṭamī (Durgā-Aṣṭamī)","name_sanskrit":"महाष्टमी","tradition":"Shakta","associated_deity":"Devī Durgā","significance":"8th day of Śāradīya Navrātri; Mahiṣāsura-mardinī kṣaṇa.","vrata":true,"detection":{"tithi_number":8,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":1}],"todays_walk":{"walk":{"id":"budha-walk","name":"Budha Walk","name_sanskrit":"बुध यात्रा","type":"graha","description":"Discrimination + BG 2.41 (vyavasāyātmikā buddhi).","step_count":6,"url":"/walk/budha-walk"},"reason":"Budhavāra (Wednesday) — its presiding graha's walk."},"cosmic_resonances":[{"historical_date":"-3137-12-25","event":"Bhīṣma's Mahaprasthan","chart_id":"bhishma","shared_marker":"same Śukla Aṣṭamī","url":"/day/-3137-12-25","relevance":0.5}]},"validity":{"eternal":false,"location_specific":"perth"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 18, 2113 CE · Perth, Australia · Vidhyamitra","description":"October 18, 2113 CE for Perth, Australia: Śukla Aṣṭamī, sūryodaya 05:33, sūryāsta 18:29.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/perth/2113-10-18","hreflang_alternates":{"en":"https://vidhyamitra.com/city/perth/2113-10-18","sa":"https://sa.vidhyamitra.com/city/perth/2113-10-18","hi":"https://hi.vidhyamitra.com/city/perth/2113-10-18","x-default":"https://vidhyamitra.com/city/perth/2113-10-18"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T14:20:46.660Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-05-31T14:20:46.660Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T14:20:46.660Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}